<template>
  <el-form :rules="rules" :model="form" ref="deptForm" label-width="120px">
    <el-form-item label="部门名称" prop="name">
      <el-input v-model="form.name" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门编码" prop="code">
      <el-input v-model="form.code" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门负责人" prop="manager">
      <el-select v-model="form.manager" style="width:80%" placeholder="请选择">
        <el-option 
        v-for='item in list' 
        :key="item.id"
        :value="item.username" 
        :label="item.username" />
        
      </el-select>
    </el-form-item>
    <el-form-item label="部门介绍" prop="introduce">
      <el-input v-model="form.introduce" style="width:80%" placeholder="1-300个字符" type="textarea" :rows="3" />
    </el-form-item>
    <el-form-item>
      <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
      <el-button size="small" @click="hCancel">取消</el-button>
    </el-form-item>
  </el-form>
</template>

<script>
import {getEmployeeSimple} from '@/api/employees'
import {addDepartments, getDepartDetail,updateDepartments} from '@/api/departments'
export default {
  created(){
    this.loadEmployees()
    //如果当前是编辑状态，发请求获取部门的详情
    if(this.isEdit){
      this.loadDepartmentDetail()
    }
  },
  props:{
    pid:{
      required:true,
      type:String
    },
    isEdit:{
      required:true,
      type:Boolean
    },
    originList:{
      required:true,
      type:Array
    }

  },
  methods:{
    //添加
   async doAdd(){
    const d = {...this.form,pid:this.pid}
    await addDepartments(d)

    this.$emit('success')
    },
    //修改
    async doEdit(){
      await updateDepartments(this.form)
      //通知父组件：关闭弹窗，更新数据
      this.$emit('success')
    },
    hSubmit(){
    //表单校验
      this.$refs.deptForm.validate(valid =>{
        if(valid){
          
          //具体添加
         this.isEdit ?this.doEdit() : this.doAdd()
        }
      })
    },
    resetForm(){
      
      this.$refs.deptForm.resetFields()
    },
       // 用户点击了取消
     hCancel() {
      // 通知父组件去关闭弹层
      this.$emit('close')
     },
    async loadDepartmentDetail(){
      //根据当前的id去拿详情
      const res = await getDepartDetail(this.pid)
      console.log('res',res)

      //数据回填
      this.form = res.data
    },
    async loadEmployees(){
      const res = await getEmployeeSimple()
     
      this.list = res.data
    }
  },
  data() {
    const validCode = (rule, value, callback) => {
      console.log(value,this.originList)
      //添加子部门，部门code不能与originList中的code有重复
      let existCodeList = this.originList.map(item=>item.code)
      if(this.isEdit){
        //根据当前的编号找到对应的部门的code
        const curDep = this.originList.find(item=>item.id === this.pid)
        const curCode = curDep.code
        //排除当前正在编辑的部门在外
        existCodeList = existCodeList.filter(item=>item !== curCode)
      }
      //
      if(existCodeList.includes(value)){
        callback(new Error(value+ ':编码被占用了'))
      }else{
        callback()
      }
    }
    //校验部门名称
    const validName = (rule, value, callback) => {
      console.log(value,this.originList)
      //当前被占用的部门名字
      // 在所有的部门中，找pid为当前父组件中点击添加时，拿到的部门的id
      const existNameList = this.originList.filter(item=>item.pid === this.pid).map(item=>item.name)
      if(this.isEdit){
        //被占用的部门名字 = 当前被编辑的部门的同级部门 - 当前被编辑的部门
        //1,根据当前的部门的id，找到pid
        const obj = this.originList.find(item=>item.id === this.pid)
        const pid =obj.pid
        //当前被编辑的部门的同级部门 - 当前被编辑的部门
        this.originList.filter(item=>item.pid === pid && item.id !== this.pid).map(item=>item.name)

        console.log('existNameList',existNameList)
      }

      if(existNameList.includes(value)){
        callback(new Error(value+ ':编码被占用了'))
      }else{
        callback()
      }
    }
    return{
      list:[],
      form:{
        name:'新部门',
        code:'123',
        manager:'',
        introduce:'部门介绍'
      },
      rules:{
        name: [
          { required: true, message: '部门名称不能为空', trigger: 'blur'},
          { min: 1, max: 50, message: '部门名称要求1-50个字符', trigger:'blur'},
          { validator: validName, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '部门编码不能为空', trigger: 'blur'},
          { min: 1, max: 50, message: '部门编码要求1-50个字符', trigger: 'blur'},
          { validator: validCode, trigger:  'blur' }
        ],
        manager: [
          { required: true, message: '部门负责人不能为空', trigger: 'blur'}
        ],
        introduce: [
          { required: true, message: '部门介绍不能为空', trigger:'blur'},
          { min: 1, max: 300, message: '部门介绍要求1-300个字符', trigger: 'blur'}
        ]
      }
    } 
  }
}
</script>
